JP5258511B2 - Air conditioning system - Google Patents

Description

  The present invention relates to an air conditioning system, and more particularly to an air conditioning system for performing cooling or heating by radiation.

  In recent years, a radiant cooling and heating system that performs cooling and heating with radiant heat has attracted attention as a cooling and heating method that achieves both energy saving and comfort. A radiant cooling / heating system is a system that adjusts the temperature of a cooling / heating room by radiant heat from a ceiling surface, a floor surface, or the like that is cooled or heated by cooling a ceiling surface or a floor surface during cooling and heating it during heating. Heating and cooling by radiant heat is comfortable because extreme temperature unevenness does not occur in the room, and the amount of heat required for cooling or heating the ceiling surface, floor surface, etc. is less than that of a so-called convection type air conditioning system. For this reason, the radiation cooling and heating system can be said to be a more energy-saving system.

As an example of a radiant cooling / heating system, cold air or hot air heat medium collides with the lower surface of the floor base board and diffuses it radially to cool or heat the floor finishing material efficiently, resulting in cold radiation or temperature generated from the floor finishing material. There are some which raise the effect of radiant heat and perform floor radiant cooling and heating. This radiant air-conditioning system uses an airflow direction changer that is installed in the underfloor air supply space by flowing a heat medium horizontally to the underfloor air supply space between the concrete slab and the underfloor board. The horizontal flow is converted into the vertical flow, and the floor finish is cooled or heated by causing the heat medium to collide with the lower surface of the floor base board to perform floor radiant cooling and heating (see, for example, Patent Document 1).
JP 2004-132680 A (FIG. 1 etc.)

  Although the above-mentioned radiant cooling and heating system can provide a good radiant effect, now that the awareness of global environmental conservation has improved and the needs of users have diversified, we now offer a variety of systems that contribute to energy conservation. Doing so broadens the range of system choices and better meets the needs of the user.

  In view of the above-described problems, an object of the present invention is to provide an air conditioning system that can perform cooling or heating by radiation while being relatively simple to construct.

  In order to achieve the above object, a cooling / heating system according to a first aspect of the present invention includes a plate-like finishing layer 11 facing a cooling / heating room R in which cooling or heating is performed, for example, as shown in FIG. A plate-like back side layer 12 that is in contact with the layer 11 from the back side of the cooling and heating chamber R, and a plurality of linear intermediate grooves 14 are formed on the surface in contact with the finishing layer 11 at intervals; Air supply means 21 and 16A for supplying air SA whose temperature is adjusted to the intermediate groove 14;

  If comprised in this way, it will become possible to cool or warm a finishing layer by flowing the temperature-controlled air through the intermediate groove formed in the surface which touches the finishing layer of a back side layer, and the member by which building materials diffuse air Therefore, the entire finishing layer can be efficiently cooled or warmed with less unevenness with a relatively small number of members and man-hours.

  Moreover, the air conditioning system which concerns on the 2nd aspect of this invention is a plate shape in which the back side layer 12 contact | connects the finishing layer 11 in the air conditioning system 1 which concerns on the said 1st aspect of the said invention, for example, as shown in FIG. The intermediate layer 13 includes a plate-like support layer 15 that is in contact with the intermediate layer 13 so that the intermediate layer 13 is sandwiched between the intermediate layer 13 and the finishing layer 11. The intermediate layer has a predetermined size. A plurality of plate-like intermediate plates 13 formed in a row are arranged; the intermediate plates 13 are arranged with a gap between the plurality of intermediate plates 13 so that the gaps between the intermediate plates 13 are intermediate grooves. 14 is formed.

  If comprised in this way, an intermediate groove can be formed by the combination of an intermediate layer and a support layer, and general-purpose building materials (building materials distributed in the market) are used without specially processing and manufacturing the back side layer. Thus, the back side layer can be easily formed.

  Moreover, the air conditioning system which concerns on the 3rd aspect of this invention, for example, as shown in FIG. 1, in the said air conditioning system 1 which concerns on the 2nd aspect of this invention, the support layer was formed in the predetermined | prescribed magnitude | size. A plurality of plate-like support plates 15 are arranged, and are supported with a gap between the plurality of support plates 15 so that a linear back side groove 16 extending in a direction intersecting the intermediate groove 14 is formed. The plate 15 is arranged; the air supply means is a sheet duct 21 in which a rectangular sheet-like member is deformed into a cylindrical shape, and one side of the sheet duct 21 is adjacent to one of the back-side grooves 16A. 15 and the intermediate plate 13, and the sheet duct 21, the opposite side of which is opposed to the one side of the seat duct 21, is sandwiched between the support plate 15 and the intermediate plate 13 adjacent to the other side of the back side groove 16 </ b> A, and the seat duct 21. The back that communicates with the inside It is configured to include a groove 16A.

  If comprised in this way, since an air supply means is a sheet | seat duct which the rectangular sheet-like member deform | transformed into the cylinder shape, even if the space of the back side of a back side layer is small, it becomes easy to hold. Moreover, since the both sides which a sheet duct opposes are pinched | interposed into a support plate and an intermediate | middle board, attachment of the sheet duct to a back side layer becomes easy, and workability | operativity can be improved.

  According to the present invention, it is possible to cool or warm the finishing layer by allowing the air whose temperature is adjusted to flow through the intermediate groove formed on the surface contacting the finishing layer of the back side layer, and the building material diffuses air. Therefore, the entire finishing layer can be efficiently cooled or warmed with less unevenness with a relatively small number of members and man-hours.

  Embodiments of the present invention will be described below with reference to the drawings. In the drawings, the same or similar members are denoted by the same or similar reference numerals, and redundant description is omitted.

  First, referring to FIG. 1, an air conditioning system 1 according to an embodiment of the present invention will be described. FIG. 1 is a partial perspective view illustrating the configuration of the air conditioning system 1. The cooling / heating system 1 according to the present embodiment cools or warms the floor 11 of the cooling / heating room R to be cooled or heated (hereinafter referred to as “cooling / heating”), and cools or heats the floor 11 by the radiant heat of the cooled or warmed floor 11. It is a system to do. The air-conditioning system 1 includes a finishing material 11 constituting a finishing layer, an intermediate plate 13 constituting an intermediate layer, a supporting plate 15 constituting a support layer, and a seat duct 21 constituting air supply means. In addition, the back side layer 12 is comprised by the intermediate | middle layer and the support layer.

  2A shows an arrangement of intermediate plates 13 that appear when the finishing material 11 (see FIG. 1) on the floor surface of the air conditioning room R is peeled off. FIG. 2B further shows the intermediate plate. The arrangement | sequence of the support plate 15 which appears when 13 is peeled is shown. The intermediate plate 13 is formed in a rectangular plate shape. A plurality of intermediate plates 13 are laid on the support plate 15. Each intermediate plate 13 is laid with the same size except for those installed at the ends. In FIG. 2A, each intermediate plate 13 is laid on the support plate 15 so that a gap is formed between the intermediate plates 13 adjacent in the horizontal direction. The support plate 15 is formed in a rectangular plate shape larger than the intermediate plate 13. A plurality of support plates 15 are disposed on the slab via support legs 18. The support plate 15 has the same size as that of the support plate 15 except for the one installed at the end. In FIG. 2B, each support plate 15 is disposed so that a gap is formed between the support plates 15 adjacent in the vertical direction. In the following description of the configuration of the air conditioning system 1, FIG. 2 will be referred to as appropriate in addition to FIG.

  The finishing material 11 is laid so that the surface appears on the entire floor of the air conditioning room R. In the present embodiment, the finishing material 11 is a plate-like woody floor material (flooring) having a thickness of about 12 mm, but may be another floor material such as a P tile. The finishing material 11 is preferably made of a raw material having a relatively high thermal conductivity, and is preferably less susceptible to damage such as cracking or warping due to temperature change. For example, the finishing material 11 is made of hardwood. Is good. The surface that appears in the cooling / heating chamber R of the finishing material 11 is configured to be able to change the temperature.

  The intermediate plate 13 is typically a plate-like member having a thickness of about 5 to 12 mm, but in this embodiment, a plywood having a thickness of about 9 mm is used. As described above, the intermediate plate 13 is laid so that a gap is formed between the adjacent intermediate plates 13, and this gap becomes the intermediate groove 14. The finishing material 11 is laid so as to cover the intermediate groove 14 over the entire laid intermediate plate 13. At this time, the intermediate plate 13 and the finishing material 11 are configured to come into contact with each other. And the temperature of the finishing material 11 can be changed because the temperature control air SA by which the temperature was adjusted flows through the formed intermediate groove 14. Then, considering the balance between the ability to cool or warm the surface of the finishing material 11 as uniformly as possible and the support of the finishing material 11, the interval between the intermediate grooves 14, and hence the size of the intermediate plate 13. It is good to decide.

  The support plate 15 is typically a particle board having a thickness of about 20 mm, but a steel plate member may be used. As described above, the support plate 15 is laid so that a gap is formed between the adjacent support plates 15, and this gap becomes the back-side groove 16. An intermediate plate 13 is laid on the laid support plate 15 so that the back-side groove 16 and the intermediate groove 14 intersect each other. At this time, the support plate 15 and the intermediate plate 13 are configured to come into contact with each other. The angle at which the intermediate groove 14 and the back-side groove 16 intersect is typically 90 °. However, in consideration of the shape of the cooling / heating room R and the characteristics of the intermediate plate 13 and the support plate 15 to be used, other than 90 ° It is good also as an angle (For example, the part used as an acute angle is 75 degrees, 60 degrees, 45 degrees, etc.). The back side groove 16 is alternately formed with a supply back side groove 16 </ b> A that supplies the temperature-controlled air SA to the intermediate groove 14 and a recovery back-side groove 16 </ b> B that receives the temperature-controlled air SA that has flowed through the intermediate groove 14.

  As shown in the sectional elevation view of FIG. 3A, the support plate 15 has a support leg 18 attached to the surface opposite to the surface in contact with the intermediate plate 13, and the slab SL is interposed via the support leg 18. It is laid on the top. Thus, an underfloor space SP in which the seat duct 21 is laid is formed between the support plate 15 and the slab SL. The support leg 18 is fitted to a board receiver 18a attached to the support plate 15 with a nail or a wood screw, a support bolt 18b screwed to the board receiver 18a so as to be adjustable in length, and an end of the support bolt 18b. And a cushion rubber 18c placed on the slab SL. The support legs 18 are typically provided so that one support plate 15 is supported at five points or six points.

  As shown in the perspective view of FIG. 3 (b), the sheet duct 21 has a rectangular sheet-like member rounded into a cylindrical shape, and opposite sides of the rounded sheet-like member are U-shaped in cross section ( The flange portion 12f is formed by being bent into a shape including the one having a wide U-shaped tip. Both flange portions 12f are formed symmetrically with respect to each other, with the tips facing outward and passing through the center of the cross section perpendicular to the axis of the seat duct 21. The recess having a U-shaped cross section of the flange portion 12f has a dimension that allows the support plate 15 to be sandwiched in the thickness direction. The seat duct 21 is configured such that both flanges 12f are fitted and inserted into the support plates 15 on both sides of the supply back side groove 16A, and the intermediate plate 13 is laid on the support plate 15 with the flanges 12f interposed therebetween. Is attached. By attaching the seat duct 21 in this way, the temperature-controlled air SA flowing through the seat duct 21 is introduced from the inside of the seat duct 21 to the supply back side groove 16A throughout the longitudinal direction of the seat duct 21. Yes. In the present embodiment, the sheet duct 21 is formed of a pair of a steel material having a U-shaped cross section and a steel material having an L-shaped cross section on a duct body 21b formed by rolling a rectangular sheet-shaped member made of resin. The mounting piece 21p is configured to be mounted so that both opposite sides of the duct main body 21b are sandwiched between the U-shaped steel material and the L-shaped steel material. The opposite sides may be bent into a U-shaped cross section to form the flange 12f.

  As shown in FIGS. 4 and 2B, each seat duct 21 is connected to a temperature-controlled air chamber 25. The temperature-controlled air chamber 25 is formed long in a direction orthogonal to the axis of the seat duct 21 and is disposed in the underfloor space SP. The temperature control air chamber 25 includes a temperature control air chamber 25A connected to one end of the seat duct 21 and a temperature control air chamber 25B connected to the other end of the seat duct 21, and each temperature control air chamber. The temperature-controlled air SA is supplied so that the flow direction of the temperature-controlled air SA flowing through 25A and 25B is reversed. With this configuration, the order in which the temperature adjustment air SA reaches the plurality of seat ducts 21 is reversed between the temperature adjustment air chamber 25A side and the temperature adjustment air chamber 25B side. It is possible to reduce the static pressure of the temperature-controlled air SA supplied to the non-uniformity by the seat ducts 21.

  The temperature-controlled air SA supplied to the temperature-controlled air chamber 25 is generated by a temperature-controlled air generator (not shown). Therefore, the cooling / heating system 1 also includes a temperature-controlled air generator (not shown). A packaged air conditioner is typically used as the temperature-controlled air generator (not shown). In this case, the air conditioning system 1 has a distribution duct (not shown) that guides the temperature-controlled air SA from the temperature-controlled air generator (not shown) to the temperature-controlled air chambers 25A and 25B. In addition, the air conditioning system 1 includes a communication port 17 (see FIG. 2) through which the temperature-controlled air SA that flows through the intermediate groove 14 and is discharged from the recovery backside groove 16B to the underfloor space SP flows into the air conditioning room R, and the finishing material 11 and It is formed through the back side layer 12. By introducing the temperature-controlled air SA into the cooling / heating room R through the communication port 17, it becomes possible to enjoy the cooling / heating effect by convection. The communication ports 17 are typically formed at 2 to 4 locations at the corners of the air conditioning room R. The communication port 17 is provided with a lattice (not shown) on the floor surface of the cooling / heating room R to prevent objects from falling. Further, on the wall surface or ceiling surface of the cooling / heating room R, a lead-out port (not shown) through which air for the temperature-controlled air SA flowing into the cooling / heating room R is led out of the cooling / heating room R is formed.

  Next, a procedure for constructing the air conditioning system 1 will be described with reference to FIGS. When a foundation floor (slab SL in the present embodiment) such as a concrete slab is formed, the support plate 15 is laid through the support legs 18 except for the portion above the portion where the temperature-controlled air chamber 25 is installed. When the support plate 15 is laid, it is laid so that the back side groove 16 is formed. The back side groove 16 includes a plurality of supply back side grooves 16A and a collection back side groove 16B. When the support plate 15 is laid, the seat duct 21 and the temperature-controlled air chamber 25 are installed. The seat duct 21 is installed such that the duct body 21b is positioned between the slab SL and the support plate 15, and the flange portion 21f passes through the supply back side groove 16A and appears on the support plate 15. Since the sheet duct 21 is formed by rounding a rectangular sheet-like member into a cylindrical shape, an elastic force acts in a direction in which both flange portions 21f are separated from each other so that a gap having the same width as the supply back side groove 16A is formed. While being formed in the upper part of the duct 21, the support plate 15 is fitted. The seat duct 21 is not attached to the collection back side groove 16B. When the temperature control air chambers 25A and 25B are attached to both ends of each sheet duct 21 fitted in the supply back side groove 16A, a distribution duct (not shown) connected to a temperature control air generator (not shown) as required. After installing, the remaining support plate 15 is laid. A temperature-controlled air generator (not shown) is separately installed in an appropriate place (for example, a room next to the air conditioning room R).

  When the support plate 15 is laid, the intermediate plate 13 is laid thereon. When laying the intermediate plate 13, the intermediate plate 13 is laid so that an intermediate groove 14 extending in a direction orthogonal to the back-side groove 16 is formed. As a result, the temperature-controlled air SA can flow in and out between the grooves 14 and 16 via the portion where the intermediate groove 14 and the back-side groove 16 intersect. The width of the intermediate groove 14 is typically a film formed between the temperature-controlled air SA flowing inside and the finishing material 11 (a layer that exists at the phase boundary when the fluid is in relative motion). It is formed to have a cross-sectional area of the intermediate groove 14 that flows at a wind speed that destroys a very thin region in which the flow state is maintained. When the temperature-controlled air SA whose wind speed is equal to or less than a predetermined value flows in parallel with the finishing material 11, a boundary film in which air stays is generally generated between the finishing material 11 and the flow of the temperature-controlled air SA. When the film is present, the surface heat transfer resistance is increased, and the cold heat or heat held by the temperature-controlled air SA is not efficiently transmitted to the finishing material 11. However, the heat transfer rate can be improved by breaking the film. it can.

  Further, by laying the intermediate plate 13, the flange portion 21 f of the seat duct 21 fitted in the supply back side groove 16 </ b> A between the support plates 15 is sandwiched and fixed between the intermediate plate 13 and the support plate 15. Thus, in the present embodiment, the seat duct 21 can be easily fixed. When the intermediate plate 13 is laid, the finishing material 11 is laid on it. The finishing material 11 is laid without a gap so as to cover all the plurality of intermediate grooves 14 formed. The surface of the finishing material 11 laid in this way becomes the floor finishing surface of the air conditioning room R. The air conditioning room R is partitioned as an air conditioning target space by separately constructing a ceiling and walls.

  With continued reference to FIG. 1 to FIG. 4, the operation (operation status) of the air conditioning system 1 will be described. In a temperature-controlled air generator (not shown), the temperature of the air conditioning room R is adjusted to a temperature suitable for radiant cooling and heating (depending on the set temperature, for example, 18 to 23 ° C. during cooling, 30 to 35 ° C. during heating). Temperature-controlled air SA is generated. Radiant cooling / heating is generally designed so that the difference between the temperature of the temperature-controlled air and the outside air temperature is small compared to cooling / heating using only convection (cooling / heating performed by supplying temperature-controlled air into the cooling / heating room). Therefore, less energy is required to generate the temperature-controlled air SA. Temperature-controlled air SA generated by a temperature-controlled air generator (not shown) is supplied to the two temperature-controlled air chambers 25A and 25B via a distribution duct (not shown).

  The temperature-controlled air SA supplied to the temperature-controlled air chambers 25A and 25B sequentially flows into the connected seat duct 21. The temperature-controlled air SA that has flowed from the temperature-controlled air chamber 25A to one end of the seat duct 21 and from the temperature-controlled air chamber 25B to the other end of the seat duct 21 passes through the seat duct 21 toward the opposite end. While flowing, it also sequentially flows into the linear supply back side groove 16A. The temperature-controlled air SA that has flowed in from both ends of the seat duct 21 meets in the seat duct 21 (hereinafter, the point where the temperature-controlled air SA meets is referred to as “meeting point”). As for the distance to the meeting point of the air conditioning SA, the order in which the temperature adjusting air SA reaches the seat ducts 21 arranged in plurality is reversed between the temperature adjusting air chamber 25A side and the temperature adjusting air chamber 25B side. Since the distance from the end portion to the portion having the same static pressure varies depending on each seat duct 21, the distance varies depending on each seat duct 21. The order in which the temperature-controlled air SA reaches the plurality of seat ducts 21 is reversed between the temperature-controlled air chamber 25A side and the temperature-controlled air chamber 25B side. Can be reduced to one side.

  The temperature-controlled air SA that has flowed into the supply backside groove 16A from the seat duct 21 sequentially flows into the intermediate grooves 14 from a portion intersecting with the plurality of formed intermediate grooves 14, and flows toward the recovery backside grooves 16B. Combined with the fact that the intermediate groove 14 is surrounded on all sides by the finishing material 11, the intermediate plate 13, and the support plate 15, the temperature-controlled air SA is moved from the supply back side groove 16A toward the recovery back side groove 16B. When flowing 14, it flows while in contact with the finishing material 11, and transmits cooling (cooling) or warm (heating) to the finishing material 11. Thereby, the finishing material 11 is cooled or warmed. Then, cooling or heating is radiated from the cooled or warmed finish 11 to the cooling / heating room R, and the cooling / heating of the cooling / heating room R is performed.

  The temperature-controlled air SA that flows through the intermediate groove 14 and reaches the collection back side groove 16B exchanges heat with the finishing material 11, and the temperature rises during cooling and decreases during heating. The temperature-controlled air SA that has reached the collection back side groove 16B flows into the underfloor space SP through the collection back side groove 16B. The temperature-controlled air SA flowing into the underfloor space SP flows into the cooling / heating room R through the communication port 17 and convects in the cooling / heating room R. The temperature-controlled air SA that has flowed into the heating / cooling room R is equal to the temperature of the finishing material 11 or lower than the finishing material 11 during cooling and higher than the finishing material 11 during heating. Will contribute. The temperature-controlled air SA that has flowed into the air-conditioning room R is then returned to a temperature-controlled air generator (not shown) and the temperature is adjusted, and then supplied to the temperature-controlled air chamber 25 again, or released to the outside air and newly supplied. Fresh air is temperature-controlled by a temperature-controlled air generator (not shown) and then supplied to the temperature-controlled air chamber 25.

  As described above, since the cooling / heating system 1 performs radiant cooling / heating by cooling or heating the finishing material 11 with the temperature-controlled air SA, the system warms the floor using a liquid as a heat medium (for example, hot water floor heating). There is no worry of problems such as water leakage that may occur. Moreover, since the air conditioning system 1 forms the intermediate | middle groove | channel 14 and the back side groove | channel 16 by devising arrangement | positioning of a general purpose building material, in order to cool or heat the finishing material 11 effectively, temperature-control air SA is extensively used. The structure to supply can be simplified compared with the case where an air blowing member is installed in each place, the construction effort (man-hour) can be reduced, and system construction cost can be reduced.

  In the above description, the finishing material 11 to be cooled or heated is provided on the floor surface of the air conditioning room R. However, the ceiling and / or the wall can be cooled or heated by the temperature-controlled air SA. Similarly to the formed finishing layer and back side layer 12, the intermediate layer 14 and the like may be formed so as to be able to radiate cold or warm heat from the ceiling and / or the wall.

  In the above description, the intermediate layer 14 is formed by appropriately arranging the intermediate plate 13 and the support plate 15 on the back side layer 12, but the groove is formed on the surface of the single-layer plate member. The groove may be an intermediate groove (a groove in which temperature-controlled air SA for cooling or heating the finishing material 11 is passed). In addition, although the example in which the intermediate groove 14 is linear is shown, it may be curved.

  In the above description, the sheet duct 21 is used as a member constituting the air supply means. However, a conventional duct such as a spiral duct, a glass wool duct, or a duct formed by processing a galvanized iron plate may be used.

  In the above description, a package type air conditioner is used as a temperature-controlled air generator (not shown), but other than this, for example, a so-called room air conditioner or an air handling unit may be used. The room air conditioner is suitable for a relatively small building and / or a building with few air conditioning rooms R. The air handling unit is suitable for a relatively large building and / or a building with many air conditioning rooms R. When a room air conditioner is used, it is preferable to additionally provide a duct that guides air blown from the room air conditioner to the temperature-controlled air chamber 25 and a booster fan that applies static pressure.

  In the above description, the temperature-controlled air SA released from the collection back side groove 16B to the underfloor space SP is caused to flow into the cooling / heating room R through the communication port 17, but even if it is released from the underfloor space SP to the outdoors. Alternatively, the air may be returned from the underfloor space SP to the temperature-controlled air generator through a duct.

It is a fragmentary perspective view explaining the structure of the air conditioning system which concerns on embodiment of this invention. It is a top view of an air conditioning room. (A) is a figure which shows schematic arrangement | sequence of the intermediate | middle board which comprises the air conditioning system which concerns on embodiment of this invention, (b) is a figure which shows schematic arrangement | positioning of the support plate. It is a figure explaining the duct periphery which comprises the air conditioning system which concerns on embodiment of this invention. (A) is a figure which shows the accommodation of a duct, (b) is a fragmentary perspective view of a duct. It is a fragmentary perspective view explaining the positional relationship of the duct and the chamber which comprise the air conditioning system which concerns on embodiment of this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Air conditioning system 11 Finishing material 12 Back side layer 13 Intermediate plate 14 Intermediate groove 15 Support plate 21 Sheet duct 16A Supply back side groove R Air conditioning room SA Temperature control air

Claims (2)

A plate-like finishing layer facing a cooling / heating room where cooling or heating is performed;
A plate-like back side layer in contact with the finishing layer from the back side of the cooling / heating chamber, and a back side layer in which a plurality of linear intermediate grooves are formed at intervals on the surface in contact with the finishing layer;
E Bei and air supply means for supplying air temperature was adjusted to the middle groove;
The back side layer includes a plate-shaped intermediate layer in contact with the finishing layer, and a plate-shaped support layer in contact with the intermediate layer surface-to-face so as to sandwich the intermediate layer between the finishing layer Is;
The intermediate layer is configured by arranging a plurality of plate-like intermediate plates formed in a predetermined size;
The intermediate plates are arranged with a gap between the plurality of intermediate plates so that a gap between the intermediate plates is formed as the intermediate groove ;
The support layer is configured by arranging a plurality of plate-like support plates formed in a predetermined size, and a plurality of linear backside grooves extending in a direction intersecting the intermediate groove are formed. The support plates are arranged with a gap between the support plates;
Air conditioning system. The air supply means is a sheet duct in which a rectangular sheet-like member is deformed into a cylindrical shape, and one side of the sheet duct is sandwiched between the support plate and the intermediate plate adjacent to one of the back side grooves. A seat duct sandwiched between the support plate and the intermediate plate, the opposite side of which is opposite to the other side of the back side groove, and the back side groove communicating with the inside of the seat duct. Composed of;
The air conditioning system according to claim 1 .

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